Antral follicle count over 35 – a clinic answers your questions

What’s a normal antral follicle count at 35?

If you’re over 35 and feeling overwhelmed by fertility planning, you’re not alone. Understanding your fertility starts with a few key factors, and the more you deep dive, you’re bound to read up on antral follicle count (AFC).

To help you navigate this crucial stage, we’ve partnered with Tambre Group, a European centre specializing in advanced reproductive medicine and the most complex cases, with clinics in Madrid and Alicante. 

With over 45 years of expertise and one of the highest success rates in Spain and Europe in assisted reproduction, Tambre Group provides world-class, patient-centred care. Their state-of-the-art facilities and cutting-edge reproductive technologies, including advanced embryology, time-lapse embryo monitoring, AI-supported laboratory systems, and highly personalised IVF protocols, support women exploring fertility treatments and egg donation options. 

A key part of their approach is continuous, personalised medical accompaniment for every patient, including international patients, who receive full multilingual care and emotional support throughout the entire fertility journey in their own language. 

Connect with their exceptional team for expert guidance and world-leading compassionate care.

Q&A: Understanding antral follicle count at age 35

What are antral follicles?

Antral follicles are tiny, fluid-filled sacs in your ovaries, each holding an immature egg. As we get older, especially after age 35, the number and quality of our eggs naturally decline. That’s where an antral follicle count (AFC) comes in. It’s a keyway to understand your ovarian reserve, or how many eggs you’ve got left. 

At a certain point in their development, these follicles become more responsive to follicle-stimulating hormone (FSH), the hormone that helps eggs grow. Usually, just one of these follicles makes it all the way to maturity each cycle, releasing an egg when you ovulate. 

How to measure antral follicle count

The most accurate way to measure antral follicle count (AFC) is through a vaginal ultrasound. During this procedure, a small probe is inserted into the vagina to view the ovaries from different angles. Antral follicles appear as small black circles on the screen, and the number in each ovary is counted. 

This information helps you and your clinic understand your egg development potential and tailor fertility treatments accordingly, including options like egg donation. 

At Tambre Group, this diagnostic step is integrated into a comprehensive fertility assessment supported by high-precision imaging and advanced reproductive technology, ensuring maximum accuracy in treatment planning. 

Normal antral follicle count by age

While it’s well known that female fertility declines with age, it’s also important to understand that antral follicle count naturally decreases over time. Here’s a general guide to what’s considered a normal, low or high antral follicle count by age group:

• Ages 25 to 34:
  A normal AFC is around 15.
  • Less than 5 is considered low.
  • More than 15 is considered high.
• Ages 35 to 40:
  A normal AFC is around 9.
  • Less than 3 is considered low.
  • More than 12 is considered high.
• Ages 41 to 46:
  As women approach menopause, fertility declines significantly. A normal AFC is around 4.
  • Less than 3 is considered low.
  • More than 10 is considered high.

It’s important to note that AFC can vary month to month and is typically measured during the early follicular phase of your menstrual cycle. Discussing your results with your doctor is the best way to understand what they mean for your fertility and next steps. 

At Tambre Group, fertility evaluation is always interpreted in the context of a complete diagnostic work-up, rather than a single measurement in isolation, ensuring a more precise and personalised approach. 

What is a good antral follicle count for IVF?

During an IVF cycle, your ovaries are stimulated to mature multiple follicles at once. The higher your antral follicle count, the more eggs your clinic can expect to retrieve. 

If you’re over 35 and have a low AFC, you may need higher doses of stimulation medication, and frustratingly – there’s a greater chance your cycle could be cancelled. 

While it varies from person to person, Tambre Group notes that an antral follicle count between 10 and 15 is typically considered a positive indicator for IVF success.

Their protocols are based on highly individualised ovarian stimulation strategies, designed to maximise response while minimising risks such as ovarian hyperstimulation syndrome (OHSS). 

Can you increase antral follicle count?

Your antral follicle count reflects the number of tiny follicles your ovaries naturally have, and this number is mostly set by age and genetics. While you can’t directly increase the count, you can support your ovarian health through good nutrition, sleep, stress management, and targeted supplementation, working with an expert practitioner. 

Fertility treatment may also help your ovaries respond better, even if the follicle count itself doesn’t change. And remember, it’s possible for your AFC to vary, depending on where you’re at in your cycle. 

Treatment personalised according to antral follicle count

At Tambre Group, one of the key strengths of the clinical approach is that treatments are fully individualised based on the antral follicle count, alongside other diagnostic tests. 

Normal follicle count:
If the AFC is considered normal for age, standard ovarian stimulation protocols are used for treatments such as IVF or intrauterine insemination (IUI). In these cases, ovarian function is considered adequate, and the clinical team may investigate other causes of infertility such as endometriosis or male factor infertility. 

High follicle count (more than 20 follicles):
A high AFC may be associated with polycystic ovary syndrome (PCOS). In these cases, lower doses of hormonal stimulation are used in IVF cycles to reduce the risk of ovarian hyperstimulation syndrome (OHSS) and ensure a safer response. 

Low follicle count (less than 10 follicles):
A low AFC suggests reduced ovarian reserve and a higher risk of poor response to stimulation. In these situations, higher doses of medication or more specific stimulation strategies may be required to optimise ovarian response. 

If a woman has a very low follicle count and is over 40, IVF with egg donation may be recommended as a highly effective treatment option.  

What does it mean if my antral follicle count is lower than average?

A lower-than-average antral follicle count (AFC) for your age can suggest a reduced ovarian reserve. And while that might feel worrying, it absolutely doesn’t mean you’re infertile, or that pregnancy is out of reach. Fertility is complex, and many factors beyond egg count – including egg quality, hormone levels, uterine health and overall wellbeing – play a role in conception.

At Tambre Group, specialists emphasise that fertility should always be assessed as a whole, combining all diagnostic tests to create a complete clinical picture. 

I have a lower antral follicle count – what are my next steps?

Lifestyle changes can support overall reproductive health: 

• Avoiding smoking and limiting alcohol
• Maintain a balanced nutrient-rich diet (think: plenty of fruit, veg, healthy fats, and whole foods)
• Stay physically active in a sustainable way  

Beyond lifestyle changes, speaking with a fertility specialist is key. The team at Clínica Tambre takes a compassionate, personalised approach, looking at your full fertility picture – not just a single data point – and exploring every option to support your path to pregnancy. 

When could egg donation play a role in treatment?

Egg donation is a deeply personal decision, but it may be recommended in cases of significantly reduced ovarian reserve, especially in women over 40. 

Tambre Group offers a structured and supportive donor programme, with expert coordination, psychological support, and advanced donor matching systems, ensuring a smooth and ethical process for patients. Egg donation in Spain is strictly regulated and fully legal, operating under one of the most established and patient-protective legal frameworks in Europe, which guarantees safety, transparency, and high medical standards for all patients. 

What can I do right now?

The first step is a consultation. At Tambre Group, the approach is always patient-first, listening carefully to medical history, emotional concerns, and reproductive goals. 

With clinics in Madrid and Alicante, Tambre ensures continuity of care and accessibility for both national and international patients. 

If you’re already in treatment and considering transferring your care, Tambre makes the process smooth, supportive, and stress-free. 

Connect with Tambre Group today for a truly patient-first fertility experience in Spain.